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Wang X, Huang P, Zhang P, Wang C, He F, Sun H. Synthesis of stabilized zero-valent iron particles and role investigation of humic acid-Fe x+ shell in Fenton-like reactions and surface stability control. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133296. [PMID: 38141302 DOI: 10.1016/j.jhazmat.2023.133296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/07/2023] [Accepted: 12/14/2023] [Indexed: 12/25/2023]
Abstract
Herein, a novel humic acid-Fex+ complex-coated ZVI (HA-Fex+@ZVI) was synthesized and used to activate peroxydisulfate (PDS) for phenol degradation. The HA-Fex+ shell selectively reacted with PDS rather than O2, leading to the formation of modified ZVI with excellent surface stability in storage and ultraefficient PDS activation in advanced oxidation processes (AOPs). As a result, the phenol degradation and PDS activation efficiencies of HA-Fex+@ZVI/PDS were ∼14.4 and ∼1.8 times higher than those of ZVI/PDS, respectively. Mechanistic explorations revealed that the replacement of the HA-Fex+ shell relative to the original passivation layer of ZVI greatly changed the SO4•- generation pathway from a heterogeneous process to a homogeneous process, resulting from the slow exposure of Fe0 (generating dissolved Fe2+) and the depolymerized HA (enhancing the Fe3+/Fe2+ cycle). Based on experimental analysis and density functional theory (DFT) calculations, the Fe3+ in HA-Fex+ could be reduced to Fe2+ by PDS, resulting in the disintegration of the HA-Fex+ shell and exposure of Fe0 core active sites. Furthermore, compared to similar catalysts synthesized with commercial HA and traditional chemicals, HA-Fex+@ZVI synthesized with multiple waste biomasses exhibited better performance. This research provides valuable insights for designing ZVI-based catalysts with excellent storage stability and ultraefficient PDS catalytic activity for AOPs.
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Affiliation(s)
- Xinhua Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Peng Huang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Peng Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
| | - Cuiping Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Feng He
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 300350, China
| | - Hongwen Sun
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
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2
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Chen X, Huang K, Gan P, Luo L, Yu K, Zhang Y, Pang Y, Xue P. Inactivation of Heterosigma akashiwo under UV/peroxydisulfate advanced disinfection system in marine waters. CHEMOSPHERE 2023; 341:140055. [PMID: 37704084 DOI: 10.1016/j.chemosphere.2023.140055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/09/2023] [Accepted: 09/02/2023] [Indexed: 09/15/2023]
Abstract
Heterosigma akashiwo (H. akashiwo) is recognized as a harmful algal bloom (HABs) species with a global distribution, capable of posing significant threats to marine ecosystems, particularly when spread through ship ballast water. This investigation focused on elucidating the inactivation kinetics and underlying mechanism of H. akashiwo through a combined ultraviolet irradiation and peroxydisulfate (UV/PDS) process. The results demonstrated a strong synergistic effect within the UV/PDS system, resulting in an inactivation of 0.78-ln and 2.67-ln within 40 min of UV and UV/PDS processes. The principal agents accountable for inactivation were identified as sulfate radicals (•SO4-) and hydroxyl radical (•OH), which exhibited a synergistic effect in the UV/PDS process. Furthermore, the study observed a negatively impact of seawater pH and salinity on the efficiency of inactivation. UV/PDS caused oxidative stress on algal cells, initially involving the participation of antioxidant enzymes in counteracting cellular damage, but this protective mechanism diminished as the reaction duration extended. The UV/PDS treatment not only inflicted damage upon H. akashiwo's photosynthetic system but also caused the extracellular release of DNA and algal organic matter (AOM) due to damaged cell membranes. Transcriptome analysis provided a molecular biology perspective on the cellular inactivation process. Upregulation of genes linked to photosynthesis and oxidative phosphorylation suggested a potential elevation in energy metabolism. In contrast, genes associated with cellular and metabolic processes, including glycolysis and the tricarboxylic acid cycle (TCA cycle), exhibited downregulation. Moreover, this treatment exerted an inhibitory influence on RNA polymerase and protein synthesis, resulting in the reduced expression of genetic information.
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Affiliation(s)
- Xuan Chen
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Kunling Huang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Pin Gan
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Lan Luo
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Kefu Yu
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China Globally Distributed
| | - Yuanyuan Zhang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China Globally Distributed.
| | - Yunfeng Pang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Pengfei Xue
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
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Shi Z, Hu B, Ge S, Chi B, Yan X, Zheng X. Facile preparation of bimetallic Au-Cu nanoclusters as fluorescent nanoprobes for sensitive detection of Cr 3+ and S 2O 82- ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 301:122855. [PMID: 37301031 DOI: 10.1016/j.saa.2023.122855] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 06/12/2023]
Abstract
Metallic nanoclusters (NCs) have attracted special attention from researchers due to their interesting optical properties. In this experiment, we proposed a facile one-step method for the synthesis of bimetallic gold-copper nanoclusters (AuCuNCs). The prepared AuCuNCs were characterized by fluorescence spectroscopy (FL), UV-vis absorption spectrum, transmission electron microscopy (TEM), etc. The emission peak of the prepared AuCuNCs was located at 455 nm and showed blue luminescence under the excitation of 365 nm UV light. Furthermore, after the addition of Cr3+ and S2O82- ions, the FL emission intensity of AuCuNCs was significantly reduced at 455 nm and there was a color change of diminished blue luminescence under UV lamp. The AuCuNCs exhibited excellent linearity and sensitivity for the detection of Cr3+ and S2O82- ions. The limits of detection (LOD) for the Cr3+ and S2O82- ions were calculated to be 1.5 and 0.037 μM, respectively. Finally, the recoveries of Cr3+ and S2O82- ions in Runxi Lake and tap water were measured by standard addition recovery test and were 96.66 ∼ 116.29 %, 95.75 ∼ 119.4 %.
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Affiliation(s)
- Zhiying Shi
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Bangyang Hu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Shengya Ge
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Baozhu Chi
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Xiluan Yan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China; College of Pharmacy, Nanchang University, Nanchang 330031, China.
| | - Xiangjuan Zheng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
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Huang Z, Qi Z, Liu C. Evaluation of the disinfection effect and mechanism of SO 4•- and HO • UV/persulfate salts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:52380-52389. [PMID: 36840873 DOI: 10.1007/s11356-023-26120-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Although ultraviolet (UV) and persulfate (PS) have been widely used in water disinfection process, their incompleteness of disinfection, such as inducing the production of viable but non-culturable cells (VBNC), has attracted extensive attention. In this study, the disinfection effect of combined UV and PS was evaluated, and the roles of SO4•- and HO• radicals in UV/PS disinfection were also analyzed. UV/PS more effectively inactivated cells and reduced the number of culturable cells. Also, the test of bacterial dark activation suggested that UV/PS disinfection inhibited the recovery of VBNC bacteria. The mechanisms of UV/PS disinfection were the increase of membrane permeability and oxidative stress, where SO4•- radicals played more role than HO• radicals. Furthermore, UV/PS disinfection more significantly perturbed the metabolism of Pseudomonas aeruginosa (p < 0.05), mainly involving glyoxylate and dicarboxylic acid metabolism, aminoacyl-tRNA biosynthesis, Alanine, aspartate and glutamate metabolism, and citric acid cycle (TCA cycle). In short, UV/PS disinfection can not only significantly reduce the number of culturable bacteria (kill bacteria) but also inhibits the recovery of VBNC bacteria.
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Affiliation(s)
- Zaihui Huang
- School of Environmental Science and Engineering, Qingdao Key Laboratory of Marine Pollutant Prevention, Shandong Key Laboratory of Environmental Processes and Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, People's Republic of China
| | - Zheng Qi
- School of Environmental Science and Engineering, Qingdao Key Laboratory of Marine Pollutant Prevention, Shandong Key Laboratory of Environmental Processes and Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, People's Republic of China
| | - Chunguang Liu
- School of Environmental Science and Engineering, Qingdao Key Laboratory of Marine Pollutant Prevention, Shandong Key Laboratory of Environmental Processes and Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, People's Republic of China.
- Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangdong Province, People's Republic of China.
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5
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Moreno-Andrés J, Tierno-Galán M, Romero-Martínez L, Acevedo-Merino A, Nebot E. Inactivation of the waterborne marine pathogen Vibrio alginolyticus by photo-chemical processes driven by UV-A, UV-B, or UV-C LED combined with H 2O 2 or HSO 5. WATER RESEARCH 2023; 232:119686. [PMID: 36764105 DOI: 10.1016/j.watres.2023.119686] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/24/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Ultraviolet (UV) radiation is a well-implemented process for water disinfection. The development of emergent UV sources, such as light-emitting diodes (LEDs), has afforded new possibilities for advanced oxidation processes. The emission wavelength is considered to be an important factor for photo-chemical processes in terms of both biological damage and energetic efficiency, as the inactivation mechanisms and mode-of-action may differ according to the wavelength that is applied. In addition, these processes merit exploration for inactivating emerging pathogens, such as marine vibrios, that are important bacteria to control in maritime activities. The main goal of this study was to compare the disinfection efficacy of several UV-LED driven processes with different modes of action. First, the effect of UV-LEDs was assessed at different UV ranges (UV-A, UV-B, or UV-C). Second, the possible enhancement of a combination with hydrogen peroxide (H2O2) or peroxymonosulfate salt (HSO5-) was investigated under two different application strategies, i.e. simultaneous or sequential. The results obtained indicate a high sensitivity of Vibrio alginolyticus to UV radiation, especially under UV-B (kobs = 0.24 cm2/mJ) and UV-C (kobs = 1.47 cm2/mJ) irradiation. The highest inactivation rate constants were obtained for UV/HSO5- (kobs (cm2/mJ)=0.0007 (UV-A); 0.39 (UV-B); 1.79 (UV-C)) with respect to UV/H2O2 (kobs (cm2/mJ)=0.0006 (UV-A); 0.26 (UV-B); and 1.54 (UV-C)) processes, however, regrowth was avoided only with UV/H2O2. Additionally, the disinfection enhancement caused by a chemical addition was more evident in the order UV-A > UV-B > UV-C. By applying H2O2 (10 mg/L) or HSO5- (2.5 mg/L) in a sequential mode before the UV, negligible effects were obtained in comparison with the simultaneous application. Finally, promising electrical energy per order (EEO) values were obtained as follows: UV/HSO5- (EEO (kWh/m3)=1.68 (UV-A); 0.20 (UV-B); 0.04 (UV-C)) and UV/H2O2 (EEO (kWh/m3)=2.15 (UV-A); 0.32 (UV-B); 0.04 (UV-C)), demonstrating the potential of UV-LEDs for disinfection in particular activities such as the aquaculture industry or maritime transport.
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Affiliation(s)
- Javier Moreno-Andrés
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea. University of Cadiz, Spain.
| | - Miguel Tierno-Galán
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea. University of Cadiz, Spain
| | - Leonardo Romero-Martínez
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea. University of Cadiz, Spain
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea. University of Cadiz, Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea. University of Cadiz, Spain
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6
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Gandhi J, Prakash H. Photo-disinfection Processes for Bacterial Inactivation and Underlying Principles for Water Constituents’ Impact: A Review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2023.100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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7
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Sciscenko I, Mora M, Micó P, Escudero-Oñate C, Oller I, Arques A. EEM-PARAFAC as a convenient methodology to study fluorescent emerging pollutants degradation: (fluoro)quinolones oxidation in different water matrices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158338. [PMID: 36041605 DOI: 10.1016/j.scitotenv.2022.158338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/21/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Commercial (fluoro)quinolones ((F)Qs), ciprofloxacin (CIP), enrofloxacin (ENR), ofloxacin (OFL), oxolinic acid (OA) and flumequine (FLU) (3 μM each), were degraded with solar-photo-Fenton in a compound parabolic concentrator photoreactor (total volume 5 L) in ultra-pure water at pH = 5.0, salty water at pH = 5.0, and simulated wastewater at pH = 5.0 and 7.5. Iron speciation (its hydrolysis and the complexation with (F)Qs 15 μM and/or chlorides 0.5 M) was calculated at pH 5.0, observing, negligible formation of Fe(III)-chloride complexes, and that >99 % of the total (F)Qs are forming complexes stoichiometry 1:1 with Fe(III) (which also increases the percentage of Fe(OH)2+), being minoritarian the free antibiotic form. On the other hand, EEM-PARAFAC (fluorescence excitation-emission matrices-parallel factor analysis) was employed to simultaneously study the behaviour of: i) 4 structure-related groups corresponding to parent pollutants and slightly oxidised by-products, ENR-like (including CIP), OFL-like, OA-like, FLU-like; ii) intermediates still showing (F)Q characteristics (exhibiting analogous fluorescent fingerprint to ENR-like one, but shifted to shorter wavelengths); iii) humic-like substances. The scores from the 4 PARAFAC components corresponding to the parent pollutants were plotted vs. accumulated energy, exhibiting slower decay than their individual removals (measured with HPLC-UV/vis) due to the contribution of the aforementioned by-products to the overall fluorescence. Moreover, thiabendazole (TBZ) 3 μM was added as fluorescence interference. The presence of (F)Qs greatly enhanced TBZ degradation due to (F)Q-Fe(III) complex formation, keeping iron active at pH = 5.0 for Fenton process. The EEM-PARAFAC model was able to recognise the former six components plus an additional one attributable to TBZ-like.
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Affiliation(s)
- Iván Sciscenko
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain.
| | - Margarita Mora
- Departamento de Matemática Aplicada, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
| | - Pau Micó
- Departamento de Informática de Sistemas y Computadores, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
| | | | - Isabel Oller
- CIEMAT-Plataforma Solar de Almería, Carretera de Senés km 4, 04200 Tabernas, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, Ctra. Sacramento s/n, 04120 Almería, Spain
| | - Antonio Arques
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
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Rivas-Zaballos I, Romero-Martínez L, Ibáñez-López ME, García-Morales JL, Acevedo-Merino A, Nebot E. Semicontinuous and batch ozonation combined with peroxymonosulfate for inactivation of microalgae in ballast water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157559. [PMID: 35878852 DOI: 10.1016/j.scitotenv.2022.157559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 07/18/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
The Ballast Water Management Convention (BWMC) establishes limits regarding the permissible number of viable organisms in discharged ballast water. Ozone as a ballast water treatment is interesting because it can be generated in-situ and has strong oxidant power. Additionally, some oxidants can be formed in reaction with seawater, especially brominated compounds, that assist in inactivating microorganisms. The objective of this study is to assess the efficacy of semicontinuous and batch ozonation as well as their combination with peroxymonosulfate salt (PMS) as methods to be used to ensure compliance with regulation D2 of the BWMC using Tetraselmis suecica as a standard microorganism. Growth modeling method was employed to determine the inactivation achieved by the treatments. The results show that ozone is an effective treatment for accomplishing the D2 of the BWMC. Batch ozonation is more efficient than semicontinuous ozonation probably because of the brominated compounds formed during the ozone saturation of the water. The oxidants that are developed during the ozonation of seawater prolong the residual effect of the treatment throughout the days of storage with practically no presence of them in the ballast tanks at 72 h. The addition of the PMS increases the inactivation in the semicontinuous ozonation, but a threshold concentration of ozone is needed to observe the synergistic effect of both oxidants. No increase is associated with the combination of O3 and PMS in the case of batch ozonation.
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Affiliation(s)
- Ignacio Rivas-Zaballos
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain.
| | - Leonardo Romero-Martínez
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - M Eugenia Ibáñez-López
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, IVAGRO-Wine and Agrifood Research Institute, University of Cadiz, Spain
| | - José L García-Morales
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, IVAGRO-Wine and Agrifood Research Institute, University of Cadiz, Spain
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
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9
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Zhang Y, Zhao YG, Hu Y, Gao M, Guo L, Ji J. Insight in degradation of tetracycline in mariculture wastewater by ultraviolet/persulfate advanced oxidation process. ENVIRONMENTAL RESEARCH 2022; 212:113324. [PMID: 35439457 DOI: 10.1016/j.envres.2022.113324] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
The direct discharge of trace amounts of antibiotics in mariculture wastewater results in adverse effect on the ecological environment of receiving waters. Hence, the degradation of tetracycline (TC) in mariculture wastewater by the ultraviolet/peroxydisulfate (UV/PS) process was investigated in this study. The results revealed that 95.73% removal of TC with 5 mg/L dosage was achieved after 30 min UV/PS treatment. Chloride ion (Cl-) in mariculture wastewater slightly inhibited TC degradation by scavenging free radicals. Comparably, bromine ion (Br-) significantly enhanced the removal of TC and even doubled the degradation rate. Reactive bromine species (RBS) made a major contribution to the TC removal, followed by free chlorine and other reactive chlorine species (RCS). The TC degradation pathway revealed that functional group shedding and ring-opening reactions occurred successively. In addition, TC mineralization rate was low within 30 min, causing the inefficient reduction of acute toxicity of TC and its intermediates, which could be improved by optimizing the process parameters. These results indicated that UV/PS is a new alternative process for the harmless treatment of mariculture wastewater containing the antibiotics.
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Affiliation(s)
- Yanan Zhang
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yang-Guo Zhao
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Lab of Marine Environmental Science and Ecology (Ocean University of China), Ministry of Education, Qingdao, 266100, China.
| | - Yubo Hu
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Mengchun Gao
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Lab of Marine Environmental Science and Ecology (Ocean University of China), Ministry of Education, Qingdao, 266100, China
| | - Liang Guo
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Lab of Marine Environmental Science and Ecology (Ocean University of China), Ministry of Education, Qingdao, 266100, China
| | - Junyuan Ji
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Lab of Marine Environmental Science and Ecology (Ocean University of China), Ministry of Education, Qingdao, 266100, China.
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10
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Moreno-Andrés J, Rivas-Zaballos I, Acevedo-Merino A, Nebot E. On the Efficacy of H 2O 2 or S 2O 82- at Promoting the Inactivation of a Consortium of Cyanobacteria and Bacteria in Algae-Laden Water. Microorganisms 2022; 10:microorganisms10040735. [PMID: 35456785 PMCID: PMC9024476 DOI: 10.3390/microorganisms10040735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/12/2022] [Accepted: 03/21/2022] [Indexed: 11/23/2022] Open
Abstract
Harmful algal blooms in coastal areas can significantly impact a water source. Microorganisms such as cyanobacteria and associated pathogenic bacteria may endanger an ecosystem and human health by causing significant eco-hazards. This study assesses the efficacy of two different reagents, H2O2 and S2O82−, as (pre-)treatment options for algae-laden waters. Anabaena sp. and Vibrio alginolyticus have been selected as target microorganisms. With the objective of activating H2O2 or S2O82−, additional experiments have been performed with the presence of small amounts of iron (18 µmol/L). For the cyanobacterial case, H2O2-based processes demonstrate greater efficiency over that of S2O82−, as Anabaena sp. is particularly affected by H2O2, for which >90% of growth inhibition has been achieved with 0.088 mmol/L of H2O2 (at 72 h of exposure). The response of Anabaena sp. as a co-culture with V. alginolyticus implies the use of major H2O2 amounts for its inactivation (0.29 mmol/L of H2O2), while the effects of H2O2/Fe(II) suggests an improvement of ~60% compared to single H2O2. These H2O2 doses are not sufficient for preventing the regrowth of V. alginolyticus after 24 h. The effects of S2O82− (+ Fe(II)) are moderate, reaching maximum inhibition growth of ~50% for Anabaena sp. at seven days of exposure. Nevertheless, doses of 3 mmol/L of S2O82− can prevent the regrowth of V. alginolyticus. These findings have implications for the mitigation of HABs but also for the associated bacteria that threaten many coastal ecosystems.
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Affiliation(s)
- Javier Moreno-Andrés
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR-International Campus of Excellence of the Sea, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Ignacio Rivas-Zaballos
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR-International Campus of Excellence of the Sea, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR-International Campus of Excellence of the Sea, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR-International Campus of Excellence of the Sea, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
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Zhu Z, Tang H, Du Y, Wei Y, Chen Y, Yang W, Zhang D, Li Z, Liu C. Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation. AIChE J 2022. [DOI: 10.1002/aic.17654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zuoyan Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
| | - Haifang Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
- College of Materials Science and Engineering Hunan University Changsha P. R. China
| | - Yi Du
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
- College of Chemistry and Chemical Engineering Anshun University Anshun P. R. China
| | - Yuanfeng Wei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
| | - Yuqing Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
| | - Weijian Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
| | - Danyu Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
| | - Ziru Li
- College of Materials Science and Engineering Hunan University Changsha P. R. China
| | - Chengbin Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha P. R. China
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12
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Wu X, Yan L, Xu G, Wang X, Wang J, Dionysiou DD. High frequency ultrasonication enhances iron-catalyzed sulphate inactivation of Escherichia coli and Staphylococcus aureus. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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13
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V M Starling MC, Mendonça Neto RPD, Pires GFF, Vilela PB, Amorim CC. Combat of antimicrobial resistance in municipal wastewater treatment plant effluent via solar advanced oxidation processes: Achievements and perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147448. [PMID: 33965817 DOI: 10.1016/j.scitotenv.2021.147448] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/11/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
This review aims to gather main achievements and limitations associated to the application of solar photocatalytic processes with regard to the removal of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) from municipal wastewater treatment plant effluent (MWWTPE). Solar photocatalytic processes were chosen considering the context of developing tropical countries. Among these processes, solar photo-Fenton has been proved effective for the elimination of ARB from MWWTPE at neutral pH in bench and pilot scale and also under continuous flow. Yet, ARG removal varies as according to the gene. Irradiation intensity and matrix composition play a key role on treatment efficiency for this purpose. The use of sulfate radical in modified solar photo-Fenton is still incipient for ARB and ARG removal. Also, investigations related to ARB resistance profile and horizontal gene transfer rates after solar photo-Fenton treatment must be further analyzed. Regarding solar heterogeneous photocatalysis, TiO2 and TiO2-composites applied in suspension are the most commonly investigated for the removal of ARB and ARGs. Irradiation intensity, temperature and catalyst dosage affect treatment efficiency. However, most studies were performed in synthetic solutions using reduced sample volumes. Extended exposition times and addition of H2O2 to the system (solar/TiO2/H2O2) are required to prevent bacteria regrowth and ensure ARG abatement. In addition, enhancement of TiO2 with graphene or (semi)metals improved ARB elimination. Differences concerning irradiation intensity, matrix composition, catalyst dosage, and model ARB and ARGs used in studies analyzed in this review hinder the comparison of photocatalysts synthesized by various research groups. Finally, future research should aim at evaluating the efficiency of solar photocatalytic processes in real matrices originated from sewage treatment systems applied in developing countries; determining indicators of antimicrobial resistance in MWWTPE; and investigating ARB mutation rate as well as the removal of cell-free ARGs present in suspension in MWWTPE.
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Affiliation(s)
- Maria Clara V M Starling
- Universidade Federal de Minas Gerais, Research Group on Environmental Applications of Advanced Oxidation Processes, Av. Antônio Carlos 6627, 31270-901, Pampulha, Belo Horizonte, Brazil
| | - Rondon P de Mendonça Neto
- Universidade Federal de Minas Gerais, Research Group on Environmental Applications of Advanced Oxidation Processes, Av. Antônio Carlos 6627, 31270-901, Pampulha, Belo Horizonte, Brazil; Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Pampulha, Belo Horizonte, MG, Brazil
| | - Giovanna F F Pires
- Universidade Federal de Minas Gerais, Research Group on Environmental Applications of Advanced Oxidation Processes, Av. Antônio Carlos 6627, 31270-901, Pampulha, Belo Horizonte, Brazil
| | - Pâmela Beccalli Vilela
- Universidade Federal de Minas Gerais, Research Group on Environmental Applications of Advanced Oxidation Processes, Av. Antônio Carlos 6627, 31270-901, Pampulha, Belo Horizonte, Brazil
| | - Camila C Amorim
- Universidade Federal de Minas Gerais, Research Group on Environmental Applications of Advanced Oxidation Processes, Av. Antônio Carlos 6627, 31270-901, Pampulha, Belo Horizonte, Brazil.
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14
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Rivas-Zaballos I, Romero-Martínez L, Moreno-Garrido I, Acevedo-Merino A, Nebot E. Evaluation of three photosynthetic species smaller than ten microns as possible standard test organisms of ultraviolet-based ballast water treatment. MARINE POLLUTION BULLETIN 2021; 170:112643. [PMID: 34175694 DOI: 10.1016/j.marpolbul.2021.112643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/13/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
The Ballast Water Management Convention (BWMC) establishes limits for viable organisms in discharged ballast water. However, organisms smaller than 10 μm are not considered in this regulation although they represent, in some regions, the majority of the phytoplankton organisms in marine water. The objective in this study is to assess three photosynthetic species smaller than 10 μm as potential standard test organism (STO) in experimentation focused on the inactivating efficacy of ultraviolet treatments (UV). A growth modelling method was employed to determine the reduction of the viable cell concentration under either light or dark post-treatment conditions to evaluate the importance of the photoreactivation. In spite of its moderate growth rate, the high UV resistance in combination with the abundance and worldwide distribution of Synechococcus sp. and the environmental importance of this species constitute important reasons for considering Synechococcus sp. as a valuable STO for ballast water treatment.
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Affiliation(s)
- Ignacio Rivas-Zaballos
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain..
| | - Leonardo Romero-Martínez
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - Ignacio Moreno-Garrido
- Institute of Marine Sciences of Andalusia (CSIC), Campus Río San Pedro, s/n, 11510 Puerto Real, Cádiz, Spain
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea, University of Cadiz, Spain
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15
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Abstract
Photo-induced Advanced Oxidation Processes (AOPs) using H2O2 or S2O82− as radical precursors were assessed for the abatement of six different contaminants of emerging concern (CECs). In order to increase the efficiency of these AOPs at a wider pH range, the catechol organic functional compound was studied as a potential assistant in photo-driven iron-based processes. Different salinity regimes were also studied (in terms of Cl− concentration), namely low salt water (1 g·L−1) or a salt–water (30 g·L−1) matrix. Results obtained revealed that the presence of catechol could efficiently assist the photo-Fenton system and partly promote the photo-induced S2O82− system, which was highly dependent on salinity. Regarding the behavior of individual CECs, the photo-Fenton reaction was able to enhance the degradation of all six CECs, meanwhile the S2O82−-based process showed a moderate enhancement for acetaminophen, amoxicillin or clofibric acid. Finally, a response-surface methodology was employed to determine the effect of pH and catechol concentration on the different photo-driven processes. Catechol was removed during the degradation process. According to the results obtained, the presence of catechol in organic macromolecules can bring some advantages in water treatment for either freshwater (wastewater) or seawater (maritime or aquaculture industry).
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16
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Romero-Martínez L, Rivas-Zaballos I, Moreno-Andrés J, Moreno-Garrido I, Acevedo-Merino A, Nebot E. Improving the microalgae inactivating efficacy of ultraviolet ballast water treatment in combination with hydrogen peroxide or peroxymonosulfate salt. MARINE POLLUTION BULLETIN 2021; 162:111886. [PMID: 33310544 DOI: 10.1016/j.marpolbul.2020.111886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Due to the increasing number of ecosystem invasions with the introduction of exogenous species via ballast water, the International Maritime Organization adopted the Ballast Water Convention (BWMC). The BWMC establishes standards for the concentration of viable organisms in a ballast water discharge. Ultraviolet (UV) irradiation is commonly used for treating ballast water; however, regrowth after UV irradiation and other drawbacks have been reported. In this study, improvement in UV treatment with the addition of hydrogen peroxide or peroxymonosulfate salt was investigated using the microalgae Tetraselmis suecica as the target organism. Results reported that each of these reagents added in a concentration of 10 ppm reduced the concentration of initial cells by more than 96%, increased the UV inactivation rate, and enabled reaching greater level of inactivation with the treatment. These improvements imply a reduction of the UV doses required for a consistent compliance with the BWMC standards.
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Affiliation(s)
- Leonardo Romero-Martínez
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea. University of Cadiz. Spain.
| | - Ignacio Rivas-Zaballos
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea. University of Cadiz. Spain
| | - Javier Moreno-Andrés
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea. University of Cadiz. Spain
| | - Ignacio Moreno-Garrido
- Institute of Marine Sciences of Andalusia (CSIC), Campus Río San Pedro, s/n 11510, Puerto Real, Cádiz, Spain
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea. University of Cadiz. Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences. INMAR - Marine Research Institute, CEIMAR - International Campus of Excellence of the Sea. University of Cadiz. Spain
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17
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Han J, Zhang X, Li W, Jiang J. Low chlorine impurity might be beneficial in chlorine dioxide disinfection. WATER RESEARCH 2021; 188:116520. [PMID: 33091806 DOI: 10.1016/j.watres.2020.116520] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/23/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
Chlorine dioxide (ClO2) is a prevalently used disinfectant alternative to chlorine, due to its effectiveness in pathogen inactivation and low yields of organic halogenated disinfection byproducts (DBPs). However, during ClO2 generation, chlorine is inevitably introduced into the obtained ClO2 solution as an "impurity", which could compromise the merits of ClO2 disinfection. In this study, drinking water disinfection with ClO2 containing 0‒25% chlorine impurity (i.e., at Cl2 to ClO2 mass ratios of 0‒25%) was simulated, and the effect of chlorine impurity on the DBP formation and developmental toxicity of the finished water was evaluated. With increasing the chlorine impurity in ClO2, the chlorite level kept decreasing and the chlorate level gradually increased; meanwhile, an unexpected trend from decline to rise was observed for the total organic halogenated DBPs, with the minimum level appearing at 5% chlorine impurity. To unravel the mechanisms for the variations of organic halogenated DBPs with chlorine impurity, a quantitative kinetic model was developed to simulate the formation of chlorinated, brominated, and iodinated DBPs in the ClO2-disinfected drinking water. The modeling results indicated that reactions involving iodide accounted for the decrease of organic halogenated DBPs at a relatively low chlorine impurity level. In accordance with DBP formation, ClO2 with 5% chlorine impurity generated less toxic drinking water than pure ClO2, while significantly higher developmental toxicity was induced until the chlorine impurity reached 25%. For E. coli inactivation, the presence of chlorine impurity enhanced the disinfection efficiency due to a synergistic effect of ClO2 and chlorine. Therefore, disinfection practices with ClO2 containing low chlorine impurity (e.g., <10%) might be favored (i.e., there is no need to eliminate low chlorine impurity in the ClO2 solution), while those containing high chlorine impurity should be concerned.
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Affiliation(s)
- Jiarui Han
- Department of Civil and Environmental Engineering, Hong Kong University of Science & Technology, Hong Kong SAR, China
| | - Xiangru Zhang
- Department of Civil and Environmental Engineering, Hong Kong University of Science & Technology, Hong Kong SAR, China.
| | - Wanxin Li
- Department of Civil and Environmental Engineering, Hong Kong University of Science & Technology, Hong Kong SAR, China
| | - Jingyi Jiang
- Department of Civil and Environmental Engineering, Hong Kong University of Science & Technology, Hong Kong SAR, China
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18
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Moreno-Andrés J, Rueda-Márquez JJ, Homola T, Vielma J, Moríñigo MÁ, Mikola A, Sillanpää M, Acevedo-Merino A, Nebot E, Levchuk I. A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams. WATER RESEARCH 2020; 181:115928. [PMID: 32504908 DOI: 10.1016/j.watres.2020.115928] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/08/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
The development of technologically advanced recirculation aquaculture systems (RAS) implies the reuse of water in a high recirculation rate (>90%). One of the most important phases for water management in RAS involves water disinfection in order to avoid proliferation of potential pathogens and related fish diseases. Accordingly, different approaches have been assessed in this study by performing a comparison of photolytic (UV-LEDs) at different wavelengths (λ = 262, 268 and 262 + 268 nm), photochemical (UV-LEDs/H2O2, UV-LEDs/HSO5- and UV-LEDs/S2O82-) and photocatalytic (TiO2/SiO2/UV-LEDs and ZnO/SiO2/UV-LEDs) processes for the disinfection of water in RAS streams. Different laboratory tests were performed in batch scale with real RAS stream water and naturally occurring bacteria (Aeromonas hydrophyla and Citrobacter gillenii) as target microorganisms. Regarding photolytic processes, higher inactivation rates were obtained by combining λ262+268 in front of single wavelengths. Photochemical processes showed higher efficiencies by comparison with a single UV-C process, especially at 10 mg L-1 of initial oxidant dose. The inactivation kinetic rate constant was improved in the range of 15-38%, with major efficiency for UV/H2O2 ∼ UV/HSO5- > UV/S2O82-. According to photocatalytic tests, higher efficiencies were obtained by improving the inactivation kinetic rate constant up to 55% in comparison with a single UV-C process. Preliminary cost estimation was conducted for all tested disinfection methods. Those results suggest the potential application of UV-LEDs as promoter of different photochemical and photocatalytic processes, which are able to enhance disinfection in particular cases, such as the aquaculture industry.
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Affiliation(s)
- Javier Moreno-Andrés
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea, University of Cadiz, Spain; Grupo de Procesos de Oxidación Avanzada, Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València, Campus de Alcoy, Alcoy, Spain.
| | - Juan José Rueda-Márquez
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, 50130 Mikkeli, Finland
| | - Tomáš Homola
- R&D Center for Low-Cost Plasma and Nanotechnology Surface Modifications (CEPLANT), Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 267/2, 611 37, Brno, Czech Republic
| | - Jouni Vielma
- Natural Resources Institute Finland, Survontie 9A, 40500, Jyväskylä, Finland
| | | | - Anna Mikola
- Water and Wastewater Engineering Research Group, School of Engineering, Aalto University, PO Box 15200, FI-00076, Aalto, Finland
| | - Mika Sillanpää
- School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, 4350 QLD, Australia; Institute of Research and Development, Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang 550000, Vietnam
| | - Asunción Acevedo-Merino
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - Enrique Nebot
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, INMAR-Marine Research Institute, CEIMAR- International Campus of Excellence of the Sea, University of Cadiz, Spain
| | - Irina Levchuk
- Water and Wastewater Engineering Research Group, School of Engineering, Aalto University, PO Box 15200, FI-00076, Aalto, Finland
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19
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Xu X, Ran Z, Wen G, Liang Z, Wan Q, Chen Z, Lin Y, Li K, Wang J, Huang T. Efficient inactivation of bacteria in ballast water by adding potassium peroxymonosulfate alone: Role of halide ions. CHEMOSPHERE 2020; 253:126656. [PMID: 32278911 DOI: 10.1016/j.chemosphere.2020.126656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
In recent years, ballast water disinfection has been paid much more attention due to the untreated discharged ballast water posing threaten of biological invasion and health related consequences. In this study, an effective and simple approach for ballast water disinfection by just adding potassium peroxymonosulfate (PMS) was assessed, and the role of halide ions in seawater on the enhancement of inactivation was revealed. The reactive species responsible for inactivation, the leakage of intracellular materials, and changes of cellular morphology after inactivation were evaluated to explore the inactivation mechanism. The results showed that Escherichia coli and Bacillus subtilis in ballast water could be totally inactivated within 10 min by adding 0.2 mM PMS alone. The inactivation of bacteria in ballast water fitted to the delayed Chick-Watson model. Chloride and bromide ion in seawater were found to play a crucial role in inactivating bacteria, while the effect of iodide ion could be negligible due to its relative lower concentration in seawater. Chlorine and bromine, produced by the reaction of PMS with chloride and bromide ion, were proved to be the main reactive components that were responsible for the inactivation of bacteria. The extracellular ATP and total nitrogen concentration increased after inactivation which indicated that cell membrane was destroyed by reactive oxidants produced by the reaction between PMS and halide ions. The change of cell morphology confirmed that bacteria were seriously damaged after inactivation. The results suggest that PMS is an attractive alternative disinfectant for ballast water disinfection and this application deserved further research.
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Affiliation(s)
- Xiangqian Xu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Zhilin Ran
- Institute of Innovational Education Research, School of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen, 518172, PR China
| | - Gang Wen
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
| | - Zhiting Liang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Qiqi Wan
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Zhuhao Chen
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Yuzhao Lin
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Kai Li
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Jingyi Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Tinglin Huang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
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20
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Venieri D, Karapa A, Panagiotopoulou M, Gounaki I. Application of activated persulfate for the inactivation of fecal bacterial indicators in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 261:110223. [PMID: 32148293 DOI: 10.1016/j.jenvman.2020.110223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 05/15/2023]
Abstract
Activated persulfate, as a member of the broad group of Advanced Oxidation Processes (AOPs), has emerged as a promising method for the elimination of microorganisms in aqueous matrices. This study evaluates the disinfection efficiency of this technique with respect to the inactivation of Escherichia coli and Enterococcus faecalis in water samples, as representative Gram negative and Gram positive bacterial indicators, respectively. In this perspective, various activators were employed, namely, ferric ion, heating, ultrasound application and UVA irradiation, which exhibited different bactericidal effect, depending on the operating conditions and the structural properties of each species. The highest disinfection rates were achieved with 200 mg/L of persulfate and ferric ion or heating as activators. For instance, 6 Log reductions were recorded within only 10-15 min when 30 mg/L of iron were applied, whereas the same bacterial removal was noted upon heat-activation at 50 °C, but in longer periods (i.e. 45-60 min). Nevertheless, in all cases E. faecalis was more resistant than E. coli, which was readily inactivated in shorter treatment periods. The overall process activity was deteriorated above the limit of 200 mg/L of persulfate. Ultrasound application exhibited lower performance, as even more prolonged treatment was required (120-150 min) for the same bacterial decay with the persulfate concentration not affecting substantially the process. In an attempt to improve the ultrasound activity, it was combined together with iron but with no synergistic results, as no actual enhancement of the method was observed. Finally, UVA did not seem to serve as an activator under the applied conditions, taking into account that it resulted in negligible loss of bacterial viability. Based on the current results, activated persulfate may be used successfully for disinfection purposes; however, the appropriate establishment of process variables is mostly required, considering the various resistance levels of aquatic microorganisms under stressed conditions.
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Affiliation(s)
- Danae Venieri
- School of Environmental Engineering, Technical University of Crete, GR-73100, Chania, Greece.
| | - Alexandra Karapa
- School of Environmental Engineering, Technical University of Crete, GR-73100, Chania, Greece
| | - Maria Panagiotopoulou
- School of Environmental Engineering, Technical University of Crete, GR-73100, Chania, Greece
| | - Iosifina Gounaki
- School of Environmental Engineering, Technical University of Crete, GR-73100, Chania, Greece
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21
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Kaur B, Dulova N. UV-assisted chemical oxidation of antihypertensive losartan in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 261:110170. [PMID: 31999612 DOI: 10.1016/j.jenvman.2020.110170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
Population growth and deteriorating health issues have led to an increase in the consumption of angiotensin receptor blockers (ARBs), such as losartan (LOR), for treating high blood pressure and, as a result, to the frequent detection of these drugs in water and wastewater. The present study focuses on the oxidation of LOR by UV photolysis, UV(/Fe2+)-activated persulfate (PS) and hydrogen peroxide (H2O2) systems. The effects of operating parameters including pH value, reaction time, concentration of oxidant and activator on the efficacy of treatment were studied. The target compound degradation by direct UV photolysis, UV/PS and UV/H2O2 systems proved to be efficient and followed a pseudo-first-order kinetic model. The application of UV/oxidant systems even at lower PS or H2O2 concentrations resulted in more than 95% of LOR degradation in 10 min. In addition, the use of UV/Fe2+-activated oxidant systems led to a further increase in the kobs by improving the LOR oxidation in aqueous solution. The effectiveness of LOR mineralization based on total organic carbon (TOC) removal was also considered. The optimized results of the studied systems obtained in ultrapure water were used in groundwater to assess the effectiveness of LOR decomposition in more complex environmental matrix. Moreover, the acute toxicity of LOR solutions before and after the UV/Fe2+-activated PS and H2O2 oxidation to luminous bacteria (Vibrio fischeri) was investigated.
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Affiliation(s)
- Balpreet Kaur
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia.
| | - Niina Dulova
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia
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